Home / 18,979.74-28,449.36-9,626.67

Finding the Fourth Proportional to 18,979.74, 28,449.36 and 9,626.67

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Solution

The fourth proportional to 18,979.74, 28,449.36 and 9,626.67 is: 14,429.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.74 : 28,449.36 = 9,626.67 : x
  2. Step 2: Convert to fraction form
    18,979.74/28,449.36 = 9,626.67/x
  3. Step 3: Cross multiply
    18,979.74x = 28,449.36 × 9,626.67
  4. Step 4: Simplify right side
    18,979.74x = 273,872,600.43
  5. Step 5: Solve for x
    x = 273,872,600.43/18,979.74
  6. Step 6: Final answer
    x = 14,429.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.